👁 Image
| | Journal (article/letter/editorial) | | LCT-SUITE PEGMATITE
WITH LATE-STAGE SODIUM ENRICHMENT, BRAZIL LAKE, YARMOUTH COUNTY,
NOVA SCOTIA. I. GEOLOGICAL...J. KONTAK§
Nova Scotia Department of Natural Resources, P.O. Box 698, Halifax, Nova Scotia B3J 2T9, Canada...Canada
Abstract
The Brazil Lake pegmatite, in Yarmouth County, Nova Scotia, enriched in Li, Ta and Rb...conforms to the LCT-suite classification. The pegmatite group, dominated by two subvertical sheets, is...395 Ma for the pegmatite equates to an amagmatic event in this part of southern Nova Scotia, but given its | 👁 Image
| | Journal (article/letter/editorial) | | LCT-SUITE PEGMATITE WITH LATE-STAGE SODIUM
ENRICHMENT, BRAZIL LAKE, YARMOUTH COUNTY, NOVA SCOTIA.
II. IMPLICATIONS...Laurentian University, Sudbury, Ontario P3E 2E6, Canada
T. Kurtis KYSER
Department of Geological Sciences...Kingston, Ontario K7L 3N6, Canada
Abstract
The 395 Ma Brazil Lake granitic pegmatite, a rare occurrence of...an LCT-type (Li–Cs–Ta) pegmatite in the Meguma Terrane
of Nova Scotia, Canada, is hosted by metasedimentary...Group. Previous
mineralogical studies showed the pegmatite formed in two distinct stages, an early spodumene | 👁 Image
| Bradley, Dwight, Shea, Erin, Buchwaldt, Robert, Bowring, Sam, Benowitz, Jeff, O'Sullivan, Paul, McCauley, Andrew (2016) Geochronology and Tectonic Context of Lithium-Cesium-Tantalum Pegmatites In the Appalachians. The Canadian Mineralogist, 54 (4) 945-969 doi:10.3749/canmin.1600035 | Journal (article/letter/editorial) | | Appalachian
orogen from Alabama to Nova Scotia. We report new U-Pb zircon (CA-TIMS), 40Ar/39Ar muscovite...From oldest to youngest, these are: (1) Brazil Lake, Nova Scotia, dated at ca. 395 (U-Pb
columbite) by...a set of zircon ages from an LCT pegmatite must be treated
as analogous to detrital zircon ages from...Keywords: pegmatite, Geochronology, Appalachian orogen, tectonics, lithium-cesium-tantalum pegmatite,
nio...niobium-yttrium-fluorine pegmatite.
INTRODUCTION
Lithium-cesium-tantalum (or LCT) pegmatites are
a widespread | 👁 Image
| | Journal (article/letter/editorial) | | processes.
Keywords Tin granite . Rare element pegmatite . Tin
province . Variscan orogeny . Crustal melting...Cornwall, Armorica, NW Iberia all the way to Nova Scotia
(Schuiling 1967; Štemprok 1995; Sinclair et al...mineralizations in
the New England states, New Brunswick, Nova Scotia,
Newfoundland, and Cornwall are underlain by...formation of Pangea. Those on Newfoundland, Nova Scotia,
New Brunswick, and along the Appalachian Mountain...orogenies
Alleghanides
NB
NES
Newfoundland
Nova Scotia
Gondwana
Armorican Spur
(Gondwana plate)
e | 👁 Image
| Zhu, Zeying, Wang, Rucheng, Marignac, Christian, Cuney, Michel, Mercadier, Julien, Che, Xudong, Lespinasse, Marc-Yves (2018) A new style of rare metal granite with Nb-rich mica: The Early Cretaceous Huangshan rare-metal granite suite, northeast Jiangxi Province, southeast China. American Mineralogist, 103 (10) 1530-1544 doi:10.2138/am-2018-6511 | Journal (article/letter/editorial) | | rarity of columbite, there is abundant Hf-rich zircon, Y-rich fluorite, and Th-rich fluocerite
included...Yichun granite, China,
Li et al. 2015; Tanco pegmatite, Canada, Van Lichtervelde et al.
2008; Cínovec granite...Johan et al. 2012; Brazil
Lake pegmatite, Nova Scotia, Kontak 2006; Karibib pegmatite,
* E-mail: rcwang@nju...region, China, Zhu et al.
2006; Cap de Creus pegmatite field, Spain, Alfonso et al. 2003;
Gatuba area...Zhu et al. 2015). The Huangshan
granite/aplite/pegmatite suite (southeast Jiangxi Province, southern
China) | 👁 Image
| | Journal (article/letter/editorial) | | including the age distributions of granites, detrital zircon grains, and passive margins.
Lithium-cesium-tantalum...ca. 1000 Ma.
Keywords: granitic pegmatite, LCT pegmatite, NYF pegmatite, secular trends, supercontinent...et al. 1979,
Tkachev 2011). Our tabulation of pegmatite ages builds
on that of Tkachev (2011), but we...to the comprehensive book by London (2008).
Pegmatite Geochronometers
Although granitic pegmatites are...precise, accurate ages
have proven elusive for many pegmatite occurrences,
especially those in the LCT family | 👁 Image
| | Journal (article/letter/editorial) | | Richmond Street North, London, Ontario N6A 5B7, Canada
Department of Geological Sciences, University of...Building, 125 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
2
Abstract
Niobium and tantalum, rare metals...Nb-Ta mineralization has also been proposed for pegmatite-hosted deposits such as
Tanco, Greenbushes, and...fluid-melt interactions in rare metal granites and pegmatite deposits may be
more widespread than previously...Keywords: Experimental petrology, rare metals, pegmatite, niobium, fluid-melt interactions
Introduction | 👁 Image
| | Journal (article/letter/editorial) | | that the Ta–Nb mineralization at the Brazil Lake pegmatite, Nova Scotia, is
associated with replacement of...widespread importance. Next, the Tanco granitic pegmatite,
one of the highest-grade rare-element pegmatites...calculate
the bulk composition of the Tanco granitic pegmatite,
and demonstrate the important point that in spite...grade of particular mineralized zones, the Tanco
pegmatite has an overall magmatic composition that
can be...physical barriers,
which locally separated the pegmatite into small cells.
The 26H area cell evolved in | 👁 Image
| Anderson, M. O., Lentz, D. R., McFarlane, C. R. M., Falck, H. (2013) A geological, geochemical and textural study of an LCT pegmatite: implications for the magmatic versus metasomatic origin of Nb-Ta mineralization in the Moose II pegmatite, Northwest Territories, Canada. Journal of GEOsciences, 58 (4) 299-320 | Journal (article/letter/editorial) | | geological, geochemical and textural study of a LCT pegmatite:
implications for the magmatic versus metasomatic...mineralization in the Moose II pegmatite, Northwest
Territories, Canada
Melissa O. ANDERSON1*, David R...Bailey Drive, Fredericton, New Brunswick, E3B 5A3,
Canada; anderson.geology@gmail.com
2
Northwest Territories...Avenue, Yellowknife, Northwest Territories, X1A 2R3, Canada
*
Corresponding author
The internal zonation and...characterized in the Moose II
pegmatite, Northwest Territories, Canada, to distinguish primary magmatic | 👁 Image
| Van Lichtervelde, Marieke, Grégoire, Michel, Linnen, Robert L., Béziat, Didier, Salvi, Stefano (2008) Trace element geochemistry by laser ablation ICP-MS of micas associated with Ta mineralization in the Tanco pegmatite, Manitoba, Canada. Contributions to Mineralogy and Petrology, 155 (6) 791-806 doi:10.1007/s00410-007-0271-z | Journal (article/letter/editorial) | | with Ta mineralization in the Tanco
pegmatite, Manitoba, Canada
Marieke Van Lichtervelde Æ Michel Grégoire...least small amounts of Ta.
Abstract In the Tanco pegmatite, one of the world’s
major Ta deposits, tantalum...petrogenesis of its host
pegmatite. Micas are common in most of the pegmatite
units and are intimately...they are interpreted to reflect
Keywords Tanco pegmatite Tantalum
Trace elements Ore deposit Micas... University of Waterloo,
Waterloo, ON N2L 3G1, Canada
D. Béziat S. Salvi
CNRS-UMR5563. Laboratoire | 👁 Image
| | Journal (article/letter/editorial) | | crandallite series) in terrestrial sandstones,
Nova Scotia, Canada—Georgia Pe-Piper and Lila M. Dolansky
1233...dating of the Musquodoboit batholith, southern Nova Scotia:
evidence for a protracted magmatic-hydrothermal...40Ar/39Ar muscovite dating
of the Brazil Lake pegmatite, Nova Scotia: A possible shear-zone
related origin...origin for an LCT-type pegmatite—Daniel J. Kontak,
Robert A. Creaser, Larry M. Heaman, and Douglas A....concentrations in the bedrock of southwestern Nova Scotia:
A reconnaissance study—Krista D. Page and J | 👁 Image
| | Journal (article/letter/editorial) | | statistical analysis applied to rare-element LCT-type
pegmatite fields: an original approach to constrain faults–...emplacement of LCT-type (Lithium–Cesium–Tantalum) pegmatite fields and their relationships with host rocks...quantify both i) the spatial distribution of the pegmatite occurrences, including their grouping/
scattering...NNE trending faults family;
with 50 % of the pegmatite occurrences located less than 500 m away from...out a lack of spatial link between each of the pegmatite subtypes and several potential granitic sources | 👁 Image
| | Journal (article/letter/editorial) | | LA–ICP–MS
Matrix effect
Nanping pegmatite
Altai No.3 pegmatite
Dahe pegmatite
Yichun
a b s t r a c t
Columbite–tantalite...commonly occurring in rare metal granite and pegmatite, alkaline granite, syenite and carbonatite. Its...matrix effect between different minerals, a 91500 zircon was used as external standard during analyses....indicating a significant matrix
effect between coltan and zircon. However, by using a coltan standard from Namibia...Namibia (Coltan139), the coltan sample from Dahe pegmatite (SNNT) has a weighted mean 206Pb/238U age of 363 | 👁 Image
| | Journal (article/letter/editorial) | | rare-element pegmatites, belonging to different pegmatite fields, have been obtained
by the LA–SF–ICP–MS...exhumation of high-pressure rocks.
Keywords: LCT pegmatite, rare-element-enriched magma, columbite–tantalite...l’exhumation des roches de haute pression.
Mots-clés: pegmatite LCT, magmatisme à éléments rares, datation sur...ideally suited for U–Pb dating of rare-element
pegmatite. They can easily accept U into their structure...LCT family is generally low, and where present, zircon
generally contains very high U contents that lead | 👁 Image
| | Journal (article/letter/editorial) | | amphibolite
facies metasedimentary rocks (Nova Scotia). Only in Maritime Canada Au mineralization is
related to...(Pardee and Park, 1948).
2.2 New Brunswick, Nova Scotia, and Newfoundland
The northern Appalachian belt...includes the occurrences of Poplar
Mountain and Lake George (Yang et al., 2002; Chi et al., 2008). At...volcanic unit (Chi et al., 2008). Mineralization at Lake George has been
mainly known for quartz-Sb and quartz-calcite-W-Mo...sedimentary
rocks of the Meguma Supergroup (Nova Scotia) host numerous quartz-Au vein-type
mineralization | 👁 Image
| | Journal (article/letter/editorial) | | pegmatites from the Mesoproterozoic Orange River pegmatite belt (Namaqualand, South Africa)
Christophe Ballouard...pegmatites from the Mesoproterozoic Orange River pegmatite belt
(Namaqualand, South Africa), Ore Geology...pegmatites from the
Mesoproterozoic Orange River pegmatite belt (Namaqualand, South Africa)
Authors: Christophe...geochronology
Abstract
The 450 km long Orange River pegmatite belt intruded the Namaqua Sector of the
Mesoproterozoic...with
bulk country rock compositions and new U-Pb zircon and monazite ages plus Sm-Nd isotope
compositions | 👁 Image
| Lawley, C. J. M., Richards, J. P., Anderson, R. G., Creaser, R. A., Heaman, L. M. (2010) Geochronology and Geochemistry of the MAX Porphyry Mo Deposit and its Relationship to Pb-Zn-Ag Mineralization, Kootenay Arc, Southeastern British Columbia, Canada. Economic Geology, 105 (6) 1113-1142 doi:10.2113/econgeo.105.6.1113 | Journal (article/letter/editorial) | | Mineralization, Kootenay Arc,
Southeastern British Columbia, Canada *
C. J. M. LAWLEY,1,2 J. P. RICHARDS,1,† R. G....University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
2 Current address: Department of Earth Sciences...Geologic Survey of Canada, 625 Robson Street, Vancouver, British Columbia, V6B 5J3, Canada
Abstract
The MAX...Columbia, Canada. Molybdenum mineralization is genetically related to the variably altered Trout Lake granodiorite...two 206Pb/238U weighted average zircon ages for phases of the Trout Lake stock at 80.3
± 1.6 and 79.2 ± | 👁 Image
| | Thesis/Dissertation | | regular
NYF-type pegmatites from the Namaqualand pegmatite belt, Northern
Cape, South Africa
by
Minenhle...Johannesburg
NOVEMBER 2020
Supervisor: Prof. M. A Elburg
Co-supervisor: Dr. C Ballouard
ACKNOWLEDGEMENTS
I...never unnoticed and for that, I thank you. To my co-supervisor, Dr.
Christophe Ballouard, thank you for...40-50 km wide Namaqualand pegmatite belt, synonymous with the
Orange River pegmatite belt (ORPB), consists...consists of the Witkop, Koegab and Sidi-Barrani pegmatite-1 complex pegmatites
which were emplaced at 985 | 👁 Image
| | Journal (article/letter/editorial) | |
Jo
ur
geology and mineralogy, as well as the zircon U-Pb chronology and Hf isotope
geochemistry, of...adjacent migmatites and luecogranite
dykes. Their zircon U-Pb ages are 274-253 Ma, with the dominating age...Keywords
Jo
ur
Anatexis, rare metal, rare earth, pegmatite, Chinese Altai
1. Introduction
Granitic pegmatites...et al., 2012a; London,
2018). In some cases, a pegmatite can be linked to its parental granite according...differentiation of granitic melts and the
emplacement of pegmatite-forming melts are still unclear. Recent studies |
|
